thanks for being with us. what is the significance and what do we know about the success of this, because there had been prior attempts, all failures, but this one seems to have worked. >> it seems to have worked according to plan and maybe worked beyond what we expected and maybe even what the north koreans expected. this puts them clearly on a path, you know, there's that three-legged stool of trying to get a nuclear weapon you can deliver some place and detonate. the mission portion of that is a very important portion of that, so this is a very serious, very provocative steps, certainly in violation of u.n. resolutions, and this is a big moment for the international community. and i would specify china about their ability to step up and engage and change the mind of north korea on its pursuit of a nuclear weapon program that can weaponize it, put it on the top of a missile, and fire it some place. >> how concerned are we right now about a nuclear test, another nuclear test, by the north koreans? >> they hav